Table 11
Number of Infant Deaths, Live Births and Infant Death Rates
by Selected Characteristics of Newborn and of Mother
for Michigan Residents, 2021
(Continued)

Characteristics of Newborn Infant
Deaths		 Live
Births		 Infant Death
Rate
Sex of Infant 656 105,022 6.2  ±0.5
  Male 356 53,643 6.6  ±0.7
  Female 299 51,377 5.8  ±0.7
Birthweight 656 105,022 6.2  ±0.5
  1,499 Grams or Less 349 1,591 219.4  ±20.6
  1,500 - 2,499 Grams 91 8,119 11.2  ±2.3
  2,500 Grams or More 207 95,253 2.2  ±0.3
Plurality 656 105,022 6.2  ±0.5
  Single Birth 569 101,128 5.6  ±0.5
  Multiple Birth 83 3,891 21.3  ±4.5
       
Characteristics of Mother Infant
Deaths		 Live
Births		 Infant Death
Rate
Age of Mother 656 105,022 6.2  ±0.5
  < 20 45 3,924 11.5  ±3.3
  20 - 29 326 50,022 6.5  ±0.7
  30 - 39 249 48,035 5.2  ±0.6
  40 + 32 3,011 10.6  ±3.7
Marital Status 656 105,022 6.2  ±0.5
  Married 213 56,654 3.8  ±0.5
  Unmarried 410 41,607 9.9  ±0.9
Level of Prenatal Care 656 105,022 6.2  ±0.5
  Adequate 328 72,016 4.6  ±0.5
  Intermediate 172 24,359 7.1  ±1.1
  Inadequate 149 8,593 17.3  ±2.8
       
Exposure to Tobacco Infant
Deaths		 Live
Births		 Infant Death
Rate
Smoked During Pregnancy 656 105,022 6.2  ±0.5
  No 535 103,178 5.2  ±0.4
  Yes 121 1,844 65.6  ±11.3
Secondhand Smoke During Pregnancy 656 105,022 6.2  ±0.5
  No 519 92,668 5.6  ±0.5
  Yes 84 8,495 9.9  ±2.1
Smoked or Secondhand Smoke During Pregnancy 656 105,022 6.2  ±0.5
  No 458 91,452 5.0  ±0.5
  Yes 150 9,884 15.2  ±2.4
History of smoking 656 105,022 6.2  ±0.5
  No 491 89,589 5.5  ±0.5
  Yes 140 14,913 9.4  ±1.5
       


Note: Rates are per 1,000 live births. Adding and subtracting the number shown after the ± symbol from the rate creates a confidence interval indicating that the true rate lies between the lower and upper bounds of this interval with 95% statistical confidence. Records with selected characteristics unknown are included in total only.  Level of prenatal care is according to the Kessner Index which is a classification of prenatal care based on the month of pregnancy in which prenatal care began, the number of prenatal visits and the length of pregnancy (i.e. for shorter pregnancies, fewer prenatal visits constitute adequate care.)
Source: 2021 Michigan Resident Birth-Death Matched File, Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services